treemanifest: speed up commit using dirty flag
We currently avoid saving a treemanifest revision if it's the same as
one of it's parents. This is checked by comparing the generated text
for all three versions. Let's avoid that when possible by comparing
the nodeids for clean (not dirty) nodes.
On the Mozilla repo, this speeds up commit from 2.836s to 2.343s.
$ hg init rep; cd rep
$ touch empty-file
$ $PYTHON -c 'for x in range(10000): print x' > large-file
$ hg addremove
adding empty-file
adding large-file
$ hg commit -m A
$ rm large-file empty-file
$ $PYTHON -c 'for x in range(10,10000): print x' > another-file
$ hg addremove -s50
adding another-file
removing empty-file
removing large-file
recording removal of large-file as rename to another-file (99% similar)
$ hg commit -m B
comparing two empty files caused ZeroDivisionError in the past
$ hg update -C 0
2 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ rm empty-file
$ touch another-empty-file
$ hg addremove -s50
adding another-empty-file
removing empty-file
$ cd ..
$ hg init rep2; cd rep2
$ $PYTHON -c 'for x in range(10000): print x' > large-file
$ $PYTHON -c 'for x in range(50): print x' > tiny-file
$ hg addremove
adding large-file
adding tiny-file
$ hg commit -m A
$ $PYTHON -c 'for x in range(70): print x' > small-file
$ rm tiny-file
$ rm large-file
$ hg addremove -s50
removing large-file
adding small-file
removing tiny-file
recording removal of tiny-file as rename to small-file (82% similar)
$ hg commit -m B
should all fail
$ hg addremove -s foo
abort: similarity must be a number
[255]
$ hg addremove -s -1
abort: similarity must be between 0 and 100
[255]
$ hg addremove -s 1e6
abort: similarity must be between 0 and 100
[255]
$ cd ..
Issue1527: repeated addremove causes util.Abort
$ hg init rep3; cd rep3
$ mkdir d
$ echo a > d/a
$ hg add d/a
$ hg commit -m 1
$ mv d/a d/b
$ hg addremove -s80
removing d/a
adding d/b
recording removal of d/a as rename to d/b (100% similar) (glob)
$ hg debugstate
r 0 0 1970-01-01 00:00:00 d/a
a 0 -1 unset d/b
copy: d/a -> d/b
$ mv d/b c
no copies found here (since the target isn't in d
$ hg addremove -s80 d
removing d/b (glob)
copies here
$ hg addremove -s80
adding c
recording removal of d/a as rename to c (100% similar) (glob)
$ cd ..